<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>tab</title>
    
</head>
<style>
.tab {
  background-color: coral;
  padding: 16px;
}
</style>

<body>
    <div id="app"></div>
    <script type="module" src="./app.ts"></script>
</body>
</html>